摘要
以离子液体为溶剂,采用干喷-湿纺法制备再生纤维素纤维,通过正交设计和系统试验考察了气隙长度、喷头拉伸比、凝固浴浓度和凝固浴温度等工艺参数对再生纤维素纤维力学性能的影响,探究了该体系的最佳纺丝工艺条件,并对此条件下的产物进行表征分析。结果表明,对于该体系,纺丝工艺参数中凝固浴浓度和拉伸比对纤维的拉伸强度、初始模量的影响较大,凝固浴温度对纤维断裂伸长影响较大。此外,最佳工艺条件下制备的再生纤维素纤维具有较高的结晶度,较好的热稳定性及光洁的表面形态。
The regenerated cellulose fibers were made by the dry-wet spinning method using ionic liquid as solvent. In this work, the influence of spinning parameters including length of air layer, draw down ratio, coagulation bath concentration and coagulation bath temperature on the mechanical properties of the cellulose fibers were investigated via orthogonal design and experiments, and then the best spinning process conditions were found. The characterizations of the fibers were also analyzed. The results show that the tensile strength and the initial modulus of the regenerated cellulose fibers are mainly influenced by coagulation bath concentration and draw down ratio, and the elongation at break of the regenerate cellulose fibers is mainly influenced by the coagulation bath temperature. The fibers have higher crystallinity, better thermal stability under appropriate technological conditions, and the surface morphology is smooth.
作者
马继玮
姜泽明
高鑫
张力平
Jiwei Ma;Zeming Jiang;Xin Gao;Liping Zhang(Beijing Key Laboratory for Lignocellulosic Chemistry,College of Material Science and Technology,Beijing Forestry University,Beijing 100083,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2019年第10期176-182,190,共8页
Polymer Materials Science & Engineering
基金
国家林业公益性科研专项(201504602-2)
关键词
纤维素
离子液体
再生纤维素
纺丝工艺
cellulose
ionic liquid
regenerated cellulose fiber
spinning process
